Wood Chipper Shear Pin Repair
At 1:38 in
I just keep breaking it! Don't you think there's an easier way?
What happens here
The narrator identifies a critical failure with the PTO-driven wood chipper: a broken shear pin (which is actually a shear bolt). He explains that this happens when the PTO engages too abruptly or if a piece of wood that is too large is fed into the chipper, causing sudden, excessive torque. The shear bolt is designed to break under such stress, protecting the tractor's PTO shaft and the chipper's internal components from damage. He also mentions that a proper design would involve a slip clutch instead of a shear pin for smoother operation, but demonstrates how to replace the shear bolt with a new Grade 8 bolt and a nyloc nut.
Goal: Replace the broken shear pin on the wood chipper.
Tools and materials
- DeWalt Socket Set DeWalt — Tightening the nut on the shear bolt
- Tractor — Connected to the wood chipper's PTO
- Wood Chipper — The equipment requiring repair
- Wrench — Holding the bolt head while tightening the nut
- Grade 8 Shear Bolt — Replacing the broken shear pin
- Nyloc Locking Nut — Securing the shear bolt